法一：配凑法f(2x-1)=4x²-5x+1=(4x²-4x+1)-(1/2)(2x-1)+(3/2),=(2x-1)² -(1/2)(2x-1)+(3/2),∴f(x)=x²-(x/2)+(3/2),又在f(2x-1)中,-1≤x≤2,-2≤2x≤4,-3≤2x-1≤1,∴函数f(x)的解析式为f(x) =x...